Can I change the blade on my Husqvarna chainsaw myself? Yes, you absolutely can change the blade on your Husqvarna chainsaw yourself with a few simple tools and following these steps. This guide will walk you through the entire process of a Husqvarna chainsaw chain replacement, making it easy to keep your saw in top working condition.
Maintaining your Husqvarna chainsaw is key to its longevity and performance. One of the most common and important pieces of Husqvarna chainsaw maintenance is changing the chain. Whether your current chain is dull, damaged, or you need to switch to a different type for a specific job, knowing how to do it is a valuable skill. This comprehensive guide will cover everything you need to know for a successful Husqvarna chainsaw bar and chain change. We’ll cover specific models like the Husqvarna 450 chainsaw chain and the Husqvarna 140 chainsaw chain, as well as more powerful saws like the Husqvarna 372xp chain replacement. Let’s get started on this straightforward changing chainsaw chain guide.
Preparing for Your Husqvarna Chainsaw Blade Change
Before you begin replacing Husqvarna chainsaw blade, it’s crucial to gather your supplies and ensure your chainsaw is ready for the task. Safety is paramount when working with chainsaws, so proper preparation prevents accidents and makes the process smooth.
Essential Tools and Supplies
Having the right tools at hand makes the job much easier. Here’s what you’ll need:
- New Chainsaw Chain: Ensure it’s the correct size and type for your specific Husqvarna model. Check your owner’s manual or the existing chain for specifications (pitch, gauge, and number of drive links).
- Guide Bar: While not always necessary to change with the chain, it’s good practice to inspect it. If it’s worn or damaged, you’ll need a new one.
- Scrench (Combination Wrench): Most Husqvarna chainsaws come with a specialized tool that combines a wrench and a screwdriver, perfect for adjusting the chain tension and removing the bar nuts.
- Gloves: Thick work gloves protect your hands from sharp chain teeth and debris.
- Safety Glasses: Essential to protect your eyes from flying metal shavings or dirt.
- Rag or Cloth: For cleaning parts.
- Owner’s Manual: Always refer to your specific Husqvarna model’s manual for any unique instructions.
Safety First: Before You Start
- Turn Off the Chainsaw: Make sure the engine is completely off and has cooled down. Never attempt to change the chain on a hot or running chainsaw.
- Engage the Chain Brake: This prevents the chain from moving unexpectedly.
- Place the Chainsaw on a Stable Surface: A flat, firm area will prevent the saw from tipping over.
- Wear Protective Gear: Always wear safety glasses and sturdy gloves.
Step-by-Step: How to Install New Chainsaw Chain
Now that you’re prepared, let’s walk through the actual process of how to install a new chainsaw chain. This section details each step for a typical Husqvarna chainsaw bar and chain change.
Step 1: Loosen the Bar Nuts
Most Husqvarna chainsaws have two bar nuts that secure the guide bar to the saw body. Use your scrench or the appropriate wrench to loosen these nuts. Turn them counter-clockwise. You don’t need to remove them completely yet, just loosen them enough so the guide bar can move slightly.
Step 2: Adjust Chain Tensioner
Locate the chain tensioning screw. On many Husqvarna models, this is a small screw located near the front of the guide bar, accessible from the side or sometimes from underneath the saw. You’ll use the screwdriver end of your scrench to adjust it.
- To loosen the chain: Turn the tensioning screw counter-clockwise.
- To tighten the chain: Turn the tensioning screw clockwise.
For this step, you want to loosen the tension so you can remove the old chain. Turn the screw counter-clockwise.
Step 3: Remove the Guide Bar and Old Chain
With the bar nuts loosened and the chain tension released, you can now carefully remove the guide bar.
- Gently pull the guide bar away from the chainsaw body. This should create enough slack in the chain to slide it off the drive sprocket.
- Slide the old chain off the guide bar. Be careful as it’s still sharp.
- Remove the guide bar completely. You might need to gently wiggle it. The bar nuts can often be left on the studs to prevent losing them.
Step 4: Mount the New Chain
This is where you’ll focus on how to install new chainsaw chain.
- Place the new chain onto the guide bar. Ensure the drive links of the chain fit into the groove along the edge of the guide bar.
- Pay attention to the chain’s direction. Most chainsaw chains have a specific direction of travel, usually indicated by an arrow or the orientation of the cutters. The cutters should be angled forward, towards the tip of the bar, to cut effectively. If you put the chain on backward, it won’t cut and can damage the saw.
- Hook the chain around the drive sprocket. Carefully feed the chain around the drive sprocket located inside the clutch cover. This can be a bit fiddly, so take your time.
Step 5: Reattach the Guide Bar and Set Initial Tension
Now, you’ll put the guide bar back in place and get the chain ready for adjustment.
- Position the guide bar back onto the chainsaw. Align the mounting studs on the saw with the holes in the base of the guide bar.
- Ensure the chain is seated in the bar groove and around the sprocket.
- Hand-tighten the bar nuts. Put them back on the studs and tighten them with your fingers as much as possible.
Step 6: Adjust Chain Tension (Crucial Step!)
Proper chain tension is vital for safe and effective operation. Too loose, and the chain can fly off. Too tight, and it can cause excessive wear on the chain, bar, and sprocket.
- How to check tension:
- With the chain brake still engaged, use your gloved hand to pull the chain around the bar. It should move smoothly.
- Lift the chain from the bottom of the bar, about midway. The chain should spring back into place, but the drive links should still be visible, not completely buried in the bar groove. If you can’t see any drive links, it’s too tight. If the chain sags, it’s too loose.
- Using the tensioner:
- To tighten: Turn the tensioning screw clockwise.
- To loosen: Turn the tensioning screw counter-clockwise.
- Make small adjustments, re-checking the tension frequently.
Step 7: Fully Tighten the Bar Nuts
Once you’ve achieved the correct chain tension, it’s time to secure the guide bar.
- Hold the guide bar up slightly with your gloved hand to maintain tension as you tighten.
- Use your scrench to fully tighten the bar nuts. Tighten them firmly and evenly.
- Re-check the chain tension after tightening the bar nuts. Sometimes, tightening the nuts can slightly alter the tension. Make any minor adjustments needed.
Step 8: Final Inspection and Testing
Before you start cutting, give everything a once-over.
- Check bar nut tightness again.
- Ensure the chain moves freely.
- Test the chain brake.
- Start the chainsaw (following your owner’s manual for starting procedures).
- Let the saw idle for a minute. Check the chain tension again. Chains often stretch slightly when new.
- Gently rev the engine and check the chain. It should spin freely when the throttle is applied but stop when you release it.
Congratulations! You’ve successfully completed your Husqvarna chainsaw chain replacement.
Specific Husqvarna Models and Chain Considerations
While the general process is the same, some Husqvarna models might have slight variations. Here’s a look at a few popular ones and common chain considerations.
Husqvarna 450 Chainsaw Chain
The Husqvarna 450 is a popular all-around saw. For a Husqvarna 450 chainsaw chain replacement, you’ll typically be looking for a 18-inch bar and a chain with .325 pitch and .050 gauge. Always confirm the exact specifications with your owner’s manual or by inspecting the current chain and bar. The chain tensioner on the 450 is usually located on the side of the saw body.
Husqvarna 140 Chainsaw Chain
The Husqvarna 140 is a lightweight, entry-level saw, ideal for smaller tasks. A Husqvarna 140 chainsaw chain replacement typically involves a 14-inch or 16-inch bar. The chain pitch is often 3/8 inch low profile. The chain tensioner mechanism might be integrated into the bar nuts themselves (tool-less design), or it might be a screw on the side, depending on the specific variant of the 140.
Husqvarna 372XP Chain Replacement
For professional-grade saws like the Husqvarna 372xp, you’re likely dealing with more demanding tasks and potentially longer bars (e.g., 20-inch or 24-inch). The chain specification for a Husqvarna 372xp chain replacement will usually be .375 (3/8) pitch and .058 or .063 gauge. These saws often feature more robust tensioning systems, sometimes including a side-mounted tensioning screw and potentially a bar nut system that requires a standard wrench for the nuts. The durability of the chain and bar is critical for such powerful machines.
Maintaining Your Guide Bar
Your guide bar is as important as the chain itself. A worn or damaged bar will cause poor cutting performance and can prematurely wear out your new chain.
Inspecting the Guide Bar
After removing the old chain, take a good look at your guide bar.
- Wear: Look for the “rail” on the guide bar where the chain runs. If the groove is widened or the edges are rounded, the bar is worn.
- Damage: Check for any nicks, burrs, or bends in the bar.
- Lubrication Hole: Ensure the small lubrication hole on the top of the bar (near the powerhead) is clear. This is where oil from the saw reaches the bar and chain. Use a small wire or pin to poke through it if it’s blocked.
- Chain Tensioner Slot: If your bar has a slotted tensioner hole on the nose, ensure it’s clear of debris.
Dressing the Guide Bar
If your guide bar has minor burrs on the edges, you can often file them down to smooth it out.
- Tool: You’ll need a flat metal file.
- Technique: File the edges of the guide bar groove evenly, keeping the file flat and perpendicular to the bar. File away from you.
- When to Replace: If the bar is significantly worn, bent, or the groove is too wide, it’s time for a new one.
Frequently Asked Questions (FAQ)
Here are some common questions regarding changing a chainsaw chain.
How often should I change my chainsaw chain?
The frequency of chain replacement depends on usage and maintenance. You should change your chain when:
* The cutters become dull and require frequent sharpening.
* The chain is stretched beyond its adjustable limit.
* The chain is damaged (e.g., broken teeth, bent links).
* You need a different type of chain for specific cutting tasks.
What happens if my chainsaw chain is too tight or too loose?
- Too Tight: Excessive friction leads to premature wear on the chain, bar, and drive sprocket. It can also cause the chain to seize and break, potentially leading to kickback.
- Too Loose: The chain can derail from the guide bar while the saw is running. This is extremely dangerous and can cause serious injury or damage to the saw.
Can I use any chain on my Husqvarna chainsaw?
No, you must use a chain that is specifically designed for your Husqvarna model. The key specifications are chain pitch, chain gauge, and the number of drive links. Using the wrong chain can lead to poor performance, damage to the saw, and safety hazards. Always check your owner’s manual or the specifications on your current chain and bar.
What is chain pitch and gauge?
- Chain Pitch: This is the distance between the drive links (the part that engages the sprocket). It’s measured from the first rivet to the third rivet, divided by two. Common pitches are .325″, 3/8″, and .404″.
- Chain Gauge: This is the thickness of the drive link that fits into the groove of the guide bar. Common gauges are .043″, .050″, .058″, and .063″.
My new chain doesn’t seem to fit, what could be wrong?
The most likely reason is that you have the wrong chain. Double-check the pitch, gauge, and the number of drive links against your saw’s requirements. Also, ensure you are installing the chain in the correct direction.
How do I store my chainsaw when not in use?
Store your chainsaw in a clean, dry place, away from extreme temperatures. Before long-term storage, it’s advisable to clean the saw, fuel it with a fuel stabilizer if you’re using gas, and perhaps lightly oil the chain and bar to prevent rust.
Changing the blade on your Husqvarna chainsaw is a manageable task that, when done correctly, ensures your saw remains a reliable and safe tool for all your cutting needs. Regular Husqvarna chainsaw maintenance, including proper chain care, will extend the life of your equipment and make your work more efficient. This Husqvarna chainsaw blade installation guide should equip you with the confidence to tackle this essential maintenance task.